OPA2228P Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
OPA2228P is a dual, wide-bandwidth, high-precision, low-noise operational amplifier with 120 dB CMRR, 0.01 µA bias current, and voltage-feedback architecture. From $7.89, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- OPA2228P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.8900(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel voltage-feedback op-amp with ultra-low noise for precision signal conditioning
- Exceptional 120 dB minimum CMRR (138 dB typical) for superior common-mode rejection
- Ultra-low bias current of 0.01 µA max for high-impedance source compatibility
- Wide bandwidth with frequency compensation for closed-loop gains ≥5, ensuring stable operation
- Available in DIP package for easy prototyping and through-hole applications
Applications
The OPA2228P is ideal for precision instrumentation amplifiers, medical measurement equipment, and sensor signal conditioning where low noise and high accuracy are critical. Its dual-channel configuration suits audio preamplifiers, data acquisition front-ends, and bridge amplifier circuits. The high CMRR and low bias current make it well-suited for strain gauge amplification, pH measurement, and electrochemical sensor interfaces.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.01 µA |
| Bias Current-Max (IIB) @25C | 0.01 µA |
| Common-mode Reject Ratio-Min | 120dB |
| Common-mode Reject Ratio-Nom | 138dB |
| Frequency Compensation | YES (AVCL>=5) |
| Input Offset Current-Max (IIO) | 0.01 µA |
| Input Offset Voltage-Max | 75 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 11V/us |
| Subcategory | Operational Amplifier |
| Supply Current-Max | 7.6mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 33000 |
| Voltage Gain-Min | 3980000 |
| Wideband | NO |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for OPA2228P:
Frequently Asked Questions
What is the input bias current of the OPA2228P?
The OPA2228P has a maximum input bias current (IIB) of 0.01 µA at 25°C, and the input offset current (IIO) is also 0.01 µA max. These ultra-low values make the OPA2228P well-suited for high-impedance sources such as pH electrodes, photodiodes, and precision sensor interfaces.
What are the typical applications for the OPA2228P?
The OPA2228P is widely used in precision instrumentation, medical equipment, audio preamplification, data acquisition systems, and sensor signal conditioning. Its high CMRR of 138 dB typical and low noise characteristics make it an excellent choice for strain gauge amplifiers, bridge circuits, and electrochemical measurement systems.
What is the minimum closed-loop gain for stable operation of the OPA2228P?
The OPA2228P is internally frequency-compensated for stable operation at closed-loop gains of 5 (AVCL ≥ 5) or greater. Operating at lower gains may result in instability. This makes it suitable for precision amplifier stages requiring moderate to high gain in industrial and instrumentation applications.
What package does the OPA2228P come in, and what are alternatives?
The OPA2228P is available in a through-hole Dual-In-Line (DIP) package, making it convenient for prototyping and legacy designs. For surface-mount applications, Texas Instruments offers the OPA2228U in SOIC-8 package. Both versions share the same electrical specifications including 120 dB CMRR and 0.01 µA bias current.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $12.1000 | $121.00 |
| 26+ | $11.6000 | $301.60 |
| 50+ | $10.0000 | $500.00 |
| 100+ | $9.1100 | $911.00 |
| 500+ | $8.3500 | $4175.00 |
| 1000+ | $7.8900 | $7890.00 |
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